/* ==========================================================================
   Willans Costa — Do ruído à clareza
   Base: layout estático e legível (sem JS / movimento reduzido).
   .motion: narrativa guiada pelo scroll.
   ========================================================================== */

:root {
  --paper: #f5f1e9;
  --paper-2: #ede6da;
  --sand: #ddd2bf;
  --line: #d6cdbd;
  --muted: #6b645a;
  --ink: #1d1b18;
  --olive: #5f664a;
  --olive-soft: #a2a78b;

  --sans: "Instrument Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Instrument Serif", "Times New Roman", serif;

  --gutter: clamp(20px, 5vw, 80px);
  --vh: 1vh;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, figure, ul, ol { margin: 0; }
ul, ol { list-style: none; padding: 0; }
a { color: inherit; text-decoration: none; }
em { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: 0; }
::selection { background: var(--sand); }
:focus-visible { outline: 1.5px solid var(--olive); outline-offset: 4px; border-radius: 2px; }

.skip-link {
  position: fixed; left: 16px; top: -60px; z-index: 100;
  background: var(--ink); color: var(--paper); padding: 10px 16px; font-size: 14px;
}
.skip-link:focus { top: 16px; }

.eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow .sep { margin: 0 .5em; }

h1, h2 {
  font-weight: 400;
  letter-spacing: -.035em;
  line-height: 1.02;
}
h1 em, h2 em { letter-spacing: -.01em; }

/* ---------- Links & botões ---------- */
.link {
  position: relative;
  display: inline-block;
  padding: 2px 0;
}
.link::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right;
  transition: transform .5s var(--ease);
}
.link:hover::after, .link:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.link--quiet { color: var(--muted); font-size: 15px; }
.link--quiet::after { transform: scaleX(1); opacity: .35; }
.link--quiet:hover::after { opacity: 1; }

.btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px;
  padding: 0 28px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: 15px; font-weight: 500;
  letter-spacing: .01em;
  overflow: hidden;
  isolation: isolate;
  transition: color .5s var(--ease);
}
.btn::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: var(--olive);
  transform: scaleX(0); transform-origin: left;
  transition: transform .6s var(--ease);
}
.btn:hover::before, .btn:focus-visible::before { transform: scaleX(1); }
.btn--small { min-height: 40px; padding: 0 18px; font-size: 14px; }
.btn--large { min-height: 64px; padding: 0 40px; font-size: 17px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 22px var(--gutter);
  transition: transform .6s var(--ease), background-color .4s, padding .4s var(--ease);
}
.site-header.is-solid { background: rgba(245, 241, 233, .92); padding-block: 14px; box-shadow: 0 1px 0 rgba(29, 27, 24, .06); }
.site-header.is-hidden { transform: translateY(-100%); }
.brand { font-size: 17px; font-weight: 500; letter-spacing: -.01em; }
.nav { display: flex; align-items: center; gap: 34px; font-size: 14px; }
.menu-toggle { display: none; }

/* ---------- Fio narrativo ---------- */
.thread {
  position: absolute; left: 0; top: 0; z-index: 1;
  width: 100%; height: calc(var(--vh) * 100);
  pointer-events: none; overflow: visible;
}
.thread path { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.thread-bundle path { stroke: var(--ink); stroke-width: .8; }
.thread-line { stroke: var(--ink); stroke-width: 1.2; }
.thread-progress { stroke: var(--olive); stroke-width: 2; }
.thread-dot { fill: var(--paper); stroke: var(--ink); stroke-width: 1.2; }
.thread-knob { fill: var(--olive); }
.thread-ring { fill: none; stroke: var(--olive); stroke-width: 1; opacity: .35; }
.no-js .thread { display: none; }

main { position: relative; }
.scene, .about, .faq, .footer { position: relative; z-index: 2; }
.anchor { position: absolute; top: 0; left: 0; width: 1px; height: 1px; }

/* ==========================================================================
   Layout base (estático)
   ========================================================================== */
.stage { position: relative; padding: 0 var(--gutter); }

/* Hero */
.scene--hero .stage {
  min-height: calc(var(--vh) * 100);
  display: flex; flex-direction: column; justify-content: center;
  padding-top: 120px; padding-bottom: 40px;
}
.hero-copy { max-width: min(700px, 46vw); position: relative; z-index: 2; }
.hero-copy .eyebrow { margin-bottom: 32px; }
h1 { font-size: clamp(2.6rem, 5.4vw, 5.2rem); }
.hero-l1, .hero-l2 { display: block; }
.hero-l2 { margin-top: .18em; color: var(--muted); }
.hero-l2 em { color: var(--olive); }
.hero-intro { margin-top: 32px; max-width: 470px; color: var(--muted); }
.hero-actions { margin-top: 40px; display: flex; flex-wrap: wrap; align-items: center; gap: 28px; }
.hero-meta {
  display: flex; flex-wrap: wrap; gap: 8px 28px;
  margin-top: 64px;
  font-size: 13px; color: var(--muted);
}
.hero-meta li { display: flex; align-items: center; gap: 10px; }
.hero-meta li::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--olive-soft); }

/* Tópicos */
.scene--topics .stage { padding-top: 120px; padding-bottom: 60px; }
.topic { padding: 48px 0; border-top: 1px solid var(--line); max-width: 1000px; }
.topic-index { font-size: 12px; letter-spacing: .16em; color: var(--muted); }
.topic-word { font-size: clamp(3rem, 8.4vw, 8rem); margin: 10px 0 18px; letter-spacing: -.045em; }
.topic-word em { color: var(--muted); }
.topic-desc { max-width: 380px; color: var(--muted); font-size: 18px; line-height: 1.5; }
.topics-eyebrow { margin-bottom: 32px; }

/* Caminho */
.scene--path .stage { padding-top: 120px; padding-bottom: 100px; }
.path-head { text-align: center; max-width: 720px; margin: 0 auto; }
.path-head .eyebrow { margin-bottom: 22px; }
.path-head h2 { font-size: clamp(2.3rem, 4.6vw, 4.4rem); }
.path-sub { margin-top: 20px; color: var(--muted); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 80px; border-top: 1px solid var(--ink); padding-top: 32px; }
.step-num { display: block; font-family: var(--serif); font-size: 34px; line-height: 1; margin-bottom: 18px; color: var(--olive); }
.step h3 { font-size: 20px; font-weight: 500; letter-spacing: -.01em; line-height: 1.3; }
.step p { margin-top: 10px; color: var(--muted); font-size: 16px; max-width: 320px; }
.window { display: none; }

/* Sobre */
.about {
  display: grid; grid-template-columns: 45fr 55fr; gap: clamp(32px, 7vw, 120px);
  align-items: center;
  padding: 80px var(--gutter) 140px;
}
.about-photo { overflow: hidden; border-radius: 2px; aspect-ratio: 4 / 5; background: var(--paper-2); }
.about-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 22%; }
.about-copy { max-width: 540px; }
.about-copy .eyebrow { margin-bottom: 26px; }
.about-copy h2 { font-size: clamp(2.1rem, 3.6vw, 3.6rem); }
.about-body { margin-top: 36px; display: grid; gap: 16px; color: var(--muted); }
.principles { margin-top: 44px; display: flex; flex-wrap: wrap; gap: 10px 32px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 15px; }
.principles li { display: flex; align-items: center; gap: 10px; }
.principles li::before { content: ""; width: 14px; height: 1px; background: var(--olive); }

/* Pausa */
.scene--breath .stage {
  min-height: calc(var(--vh) * 100);
  display: grid; place-items: center; text-align: center;
  padding-block: 120px;
}
.breath-inner { max-width: 1000px; }
.breath-inner h2 { font-size: clamp(2.2rem, 5vw, 4.8rem); line-height: 1.06; }
.breath-inner h2 em { color: var(--olive); }
.breath-sub { margin: 36px auto 0; max-width: 460px; color: var(--muted); font-size: 18px; }

/* Online */
.scene--online .stage { padding-block: 120px; text-align: center; }
.online-eyebrow { font-size: 14px; color: var(--ink); }
.online-sub { font-size: clamp(2.2rem, 4.4vw, 4rem); line-height: 1.1; margin-top: 12px; }
.frame { display: none; }
.person { display: none; }
.availability {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 24px 64px;
  margin-top: 56px; font-size: 14px; color: var(--muted);
}
.availability li { display: grid; gap: 2px; text-align: left; }
.availability b { font-weight: 500; color: var(--ink); font-size: 16px; }

/* FAQ */
.faq {
  display: grid; grid-template-columns: 1fr 1.35fr; gap: clamp(40px, 7vw, 120px);
  padding: clamp(100px, 16vh, 180px) var(--gutter);
  align-items: start;
}
.faq-head .eyebrow { margin-bottom: 22px; }
.faq-head h2 { font-size: clamp(2.2rem, 4vw, 3.8rem); }
.faq-head { position: sticky; top: 120px; }
.accordion details { position: relative; }
.accordion details::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: var(--ink); transform: scaleX(0); transform-origin: left;
  transition: transform .5s var(--ease);
}
.accordion details { border-bottom: 1px solid var(--line); }
.accordion details:first-child { border-top: 1px solid var(--line); }
.accordion details[open]::after { transform: scaleX(1); }
.accordion summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 28px 0;
  font-size: clamp(17px, 1.5vw, 20px);
  transition: transform .4s var(--ease), color .3s;
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary:hover { color: var(--olive); }
.accordion details[open] summary { transform: translateY(-4px); }
.accordion summary i { position: relative; flex: none; width: 14px; height: 14px; transition: transform .45s var(--ease); }
.accordion summary i::before, .accordion summary i::after {
  content: ""; position: absolute; left: 0; top: 50%; width: 100%; height: 1px; background: currentColor;
}
.accordion summary i::after { transform: rotate(90deg); }
.accordion details[open] summary i { transform: rotate(135deg); }
.answer { overflow: hidden; }
.answer p { padding: 0 48px 30px 0; color: var(--muted); max-width: 620px; }

/* CTA */
.scene--cta .stage {
  min-height: calc(var(--vh) * 100);
  display: grid; place-items: center; text-align: center;
  padding-block: 120px;
}
.cta-inner { max-width: 920px; display: flex; flex-direction: column; align-items: center; }
.cta-inner .eyebrow { margin-bottom: 26px; }
.cta-inner h2 { font-size: clamp(2.4rem, 5.6vw, 5.4rem); }
.cta-inner h2 em { color: var(--olive); }
.cta-text { margin: 28px 0 44px; color: var(--muted); max-width: 420px; }
.cta-meta { margin-top: 28px; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 28px; font-size: 13px; color: var(--muted); }

/* Footer */
.footer {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px;
  padding: 80px var(--gutter) 40px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}
.footer-brand p { margin-top: 12px; color: var(--muted); }
.footer-nav { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.footer-note { grid-column: 1 / -1; margin-top: 40px; color: var(--muted); font-size: 12px; }

/* Cursor (somente desktop com mouse) */
.cursor { display: none; }
@media (pointer: fine) and (hover: hover) {
  .cursor {
    display: block; position: fixed; left: 0; top: 0; z-index: 90;
    width: 30px; height: 30px; margin: -15px 0 0 -15px;
    border: 1px solid rgba(29, 27, 24, .35); border-radius: 50%;
    pointer-events: none; opacity: 0;
    transition: width .4s var(--ease), height .4s var(--ease), margin .4s var(--ease), background-color .4s, border-color .4s, opacity .3s;
  }
  .cursor.is-on { opacity: 1; }
  .cursor.is-hover { width: 56px; height: 56px; margin: -28px 0 0 -28px; background: rgba(95, 102, 74, .1); border-color: rgba(95, 102, 74, .5); }
  .about-photo img, .avatar--photo img { transition: transform .8s var(--ease); }
  .about-photo:hover img { transform: scale(1.03); }
}

/* ==========================================================================
   Narrativa (.motion)
   ========================================================================== */
.motion .thread { position: fixed; }
.motion .scene .stage {
  position: sticky; top: 0;
  height: calc(var(--vh) * 100);
  min-height: 0;
  overflow: hidden;
  padding: 0;
}
.motion .scene--hero   { height: calc(var(--vh) * 180); }
.motion .scene--topics { height: calc(var(--vh) * 300); }
.motion .scene--path   { height: calc(var(--vh) * 480); }
.motion .scene--breath { height: calc(var(--vh) * 150); }
.motion .scene--online { height: calc(var(--vh) * 220); }
.motion .scene--cta    { height: calc(var(--vh) * 160); }

.motion [data-anim] { will-change: transform, opacity; }
.motion .split .w { display: inline-block; white-space: pre; }

/* Hero */
.motion .scene--hero .stage { display: block; padding: 0; }
.motion .hero-copy {
  position: absolute; left: var(--gutter); top: 50%;
  width: min(46vw, 700px);
  transform: translateY(-50%);
}
.motion .hero-copy-inner { will-change: transform; }
.motion .hero-meta { position: absolute; left: var(--gutter); right: var(--gutter); bottom: 34px; margin: 0; }

/* Tópicos */
.motion .scene--topics .stage { padding: 0; }
.motion .topics-eyebrow { position: absolute; left: var(--gutter); bottom: 40px; margin: 0; }
.motion .topic {
  position: absolute; margin: 0; padding: 0; border: 0;
  opacity: 0; will-change: transform, opacity, filter;
}
.motion .topic[data-topic="0"] { left: 9vw; top: 13%; }
.motion .topic[data-topic="1"] { right: 9vw; top: 61%; text-align: right; }
.motion .topic[data-topic="1"] .topic-desc { margin-left: auto; }
.motion .topic[data-topic="2"] { left: 22vw; top: 13%; }
.motion .topic-word { margin: 6px 0 16px; }

/* Caminho */
.motion .path-head { position: absolute; left: 0; right: 0; top: 17%; padding: 0 var(--gutter); opacity: 0; }
.motion .steps { position: absolute; inset: 0; margin: 0; padding: 0; border: 0; display: block; }
.motion .step { position: absolute; top: 0; left: 0; width: min(300px, 26vw); opacity: 0; }
.motion .step-num {
  display: block; width: max-content;
  font-family: var(--sans); font-size: 13px; letter-spacing: .12em; color: var(--muted);
  margin: 0 0 16px; transform-origin: left top;
}
.motion .step-body { opacity: 0; }
.motion .window {
  display: block; position: absolute; inset: 0; z-index: 3;
  visibility: hidden; overflow: hidden;
  background: var(--paper-2);
}
.motion .window img {
  width: 100%; height: 100%; max-width: none;
  object-fit: cover; object-position: 50% 22%;
  transform-origin: 50% 40%;
  will-change: transform;
}

/* Sobre sobreposto ao estado final do palco */
.motion .about-photo { display: none; }
.motion .about {
  display: block;
  height: calc(var(--vh) * 100);
  margin-top: calc(var(--vh) * -100);
  padding: 0;
  z-index: 4;
  pointer-events: none;
}
.motion .about-copy {
  position: absolute; left: 56vw; right: var(--gutter); top: 50%;
  transform: translateY(-50%);
  max-width: 560px;
  pointer-events: auto;
}
.motion .about-copy > * { opacity: 0; }

/* Pausa */
.motion .scene--breath .stage { display: grid; place-items: center; text-align: center; padding: 0 var(--gutter); }
.motion .breath-inner h2 .w { opacity: .1; }
.motion .breath-sub { opacity: 0; }

/* Online */
.motion .scene--online .stage { padding: 0; }
.motion .online-copy { position: absolute; left: 0; right: 0; top: 0; pointer-events: none; }
.motion .online-eyebrow, .motion .online-sub { position: absolute; left: 0; right: 0; opacity: 0; }
.motion .online-sub { margin: 0; }
.motion .frame {
  display: block; position: absolute; top: 0; left: 0;
  border: 1px solid var(--line);
  background: var(--paper-2);
  border-radius: 6px;
  visibility: hidden;
}
.motion .avatar {
  position: absolute; left: 50%; top: 50%;
  width: 64px; height: 64px; margin: -32px 0 0 -32px;
  border-radius: 50%;
  border: 1px solid var(--ink);
  overflow: hidden;
}
.motion .avatar--photo { border-color: transparent; }
.motion .avatar--photo img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 18%; transform: scale(1.5); transform-origin: 52% 22%; }
.motion .person {
  display: block; position: absolute; top: 0; left: 0; z-index: 2;
  font-size: 12px; font-weight: 500; letter-spacing: .16em; text-transform: uppercase;
  color: var(--muted); opacity: 0; white-space: nowrap;
}
.motion .availability { position: absolute; left: 0; right: 0; bottom: 9%; margin: 0; opacity: 0; }

/* CTA */
.motion .scene--cta .stage { display: grid; place-items: center; text-align: center; padding: 0 var(--gutter); }
.motion .cta-inner > * { opacity: 0; }

/* ==========================================================================
   Tablet / mobile
   ========================================================================== */
@media (max-width: 1100px) {
  .nav { gap: 22px; }
}

@media (max-width: 860px) {
  body { font-size: 16px; }
  .menu-toggle {
    display: grid; place-content: center; gap: 6px;
    width: 44px; height: 44px; margin-right: -10px;
    background: none; border: 0; cursor: pointer; color: var(--ink);
  }
  .menu-toggle i { display: block; width: 22px; height: 1px; background: currentColor; transition: transform .4s var(--ease); }
  .menu-toggle[aria-expanded="true"] i:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] i:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .nav {
    position: fixed; inset: 0; z-index: -1;
    flex-direction: column; align-items: flex-start; justify-content: center; gap: 22px;
    padding: 0 var(--gutter);
    background: var(--paper);
    font-size: 30px; letter-spacing: -.02em;
    opacity: 0; visibility: hidden;
    transition: opacity .4s var(--ease), visibility .4s;
  }
  .nav.is-open { opacity: 1; visibility: visible; }
  .nav-cta { margin-top: 18px; font-size: 16px; letter-spacing: 0; min-height: 52px; padding: 0 26px; }
  body.menu-open { overflow: hidden; }

  .hero-copy { max-width: none; }
  .steps { grid-template-columns: 1fr; border-top: 0; border-left: 1px solid var(--ink); padding: 0 0 0 28px; gap: 44px; }
  .about { grid-template-columns: 1fr; padding-top: 40px; }
  .faq { grid-template-columns: 1fr; }
  .faq-head { position: static; }
  .footer { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }

  /* Narrativa mobile */
  .motion .scene--hero   { height: calc(var(--vh) * 170); }
  .motion .scene--topics { height: calc(var(--vh) * 280); }
  .motion .scene--path   { height: calc(var(--vh) * 450); }
  .motion .scene--breath { height: calc(var(--vh) * 140); }
  .motion .scene--online { height: calc(var(--vh) * 200); }
  .motion .scene--cta    { height: calc(var(--vh) * 150); }

  .motion .hero-copy { top: 108px; width: auto; right: var(--gutter); transform: none; }
  .motion .hero-copy .eyebrow { margin-bottom: 22px; }
  .motion h1 { font-size: clamp(2.2rem, 10vw, 3.4rem); }
  .motion .hero-intro { margin-top: 20px; font-size: 15px; }
  .motion .hero-actions { margin-top: 28px; gap: 20px; }
  .motion .hero-meta { bottom: 22px; font-size: 12px; gap: 6px 18px; }

  .motion .topics-eyebrow { bottom: 28px; }
  .motion .topic { left: var(--gutter) !important; right: var(--gutter) !important; text-align: left !important; }
  .motion .topic[data-topic="0"] { top: 14%; }
  .motion .topic[data-topic="1"] { top: 60%; }
  .motion .topic[data-topic="2"] { top: 13%; }
  .motion .topic[data-topic="1"] .topic-desc { margin-left: 0; }
  .motion .topic-word { font-size: clamp(2.8rem, 13vw, 4.6rem); }
  .motion .topic-desc { font-size: 16px; }

  .motion .path-head { top: 12%; text-align: left; }
  .motion .path-head h2 { font-size: clamp(2rem, 9vw, 3rem); }
  .motion .path-sub { margin-top: 12px; }
  .motion .step { width: calc(90vw - var(--gutter) - 34px); }
  .motion .step-num { margin-bottom: 6px; }
  .motion .step h3 { font-size: 18px; }
  .motion .step p { font-size: 15px; margin-top: 6px; }

  .motion .about { height: auto; margin-top: 0; padding: 56px var(--gutter) 110px; pointer-events: auto; }
  .motion .about-copy { position: static; transform: none; max-width: none; }

  .motion .avatar { width: 48px; height: 48px; margin: -24px 0 0 -24px; }
  .motion .person { font-size: 11px; }
  .motion .availability { bottom: 7%; gap: 14px 28px; padding: 0 var(--gutter); }
  .motion .availability li { text-align: center; }
  .motion .availability b { font-size: 14px; }
}

@media (max-width: 480px) {
  .hero-meta li:last-child { flex-basis: 100%; }
  .btn--large { width: 100%; padding: 0 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}